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Astrophysics and Space ScienceVolume 271, Issue 1, 2000, Pages 91-95

Column density distribution of galactic LYα absorption systems(Article)

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  • aDept. of Physics and Astronomy, SUNY at Stony Brook, Stony Brook, NY 11794-3800, United States
  • bDipartimento di Astronomia, Università di Trieste, Via Tiepolo 11, 1-34131 Trieste, Italy
  • cAstronomical Observatory, Volgina 7, 11000 Belgrade, Serbia

Abstract

A simple consistency argument for hypothesis of the galactic halo origin of the Lyα forest absorption lines is advanced, based on the recent determination of column-density vs. impact parameter relation for the low-redshift gaseous galactic haloes. It is shown that observations of neutral hydrogen absorption around luminous galaxies are consistent with the index of the power-law column density distribution derived from statistical analyses of large samples of high-redshift Lyα forest lines.

Funding details

Funding sponsor Funding number Acronym
Università degli Studi di TriesteUniTS

  • 1

    SS acknowledges the financial support of the University of Trieste.

  • ISSN: 0004640X
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1023/A:1002150321117
  • Document Type: Article
  • Publisher: Springer Netherlands

  Ćirković, M.M.; Dept. of Physics and Astronomy, SUNY at Stony Brook, United States;
© Copyright 2018 Elsevier B.V., All rights reserved.

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